NTHU_Racing
For NTHU_Racing MCU tutorial Learn to use Serial Oscilloscope & analog pin
Dependencies: mbed
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Practice_3_example
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NTHU_Racing
Revision 2:04dde3a9d171, committed 2017-01-20
- Comitter:
- open4416
- Date:
- Fri Jan 20 13:44:57 2017 +0000
- Parent:
- 1:5968363c5d23
- Commit message:
- For NTHU_Racing MCU tutorial
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| sample_timebase.cpp | Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Jan 20 13:44:57 2017 +0000
@@ -0,0 +1,76 @@
+#include "mbed.h"
+#define pi 3.141592f
+#define d2r 0.01745329f
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~GPIO registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+AnalogIn adc = A0; //analog reading
+Serial pc(D1, D0); //Serial reg
+PwmOut led = D13; //link leg
+AnalogOut dac = A2; //Note!!! Only for F446re, not aviable for MCU without DAC
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of GPIO registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~Varible registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+Ticker TT1; //call a timer
+int TimeCount = 0; //work as a clock
+float SignalGenValue = 0.0f; //value for DAC or PWM reference
+float SignalProbeValue = 0.0f; //value for ADC readed
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Varible registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~Function registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+void init_IO(); //initialize IO state
+void init_TIMER(); //set TT_main{} rate
+void TT1_main(); //timebase function rated by TT1
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Function registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~main funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+int main()
+{
+ init_IO(); //initialized value
+ init_TIMER(); //initialized Timer Inturrupt rate
+
+ while(1) { //main() loop
+ }
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of main funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~init_IO funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+void init_IO(void) //initialize
+{
+ led = 0.0f;
+ dac = 0.0f;
+ pc.baud(115200); //set baud rate
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of init_IO funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~Timebase funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+void init_TIMER() //set TTx_main{} rate
+{
+ TT1.attach_us(&TT1_main, 20000); //0.02 sec
+}
+
+void TT1_main() //interrupt function by TT1
+{
+ //generator time reference
+ TimeCount = TimeCount + 1;
+ if(TimeCount > 50) {
+ TimeCount=0;
+ }
+
+ //start generating signal output
+ SignalGenValue = pow(sin(pi*TimeCount/50.0f),2);
+ dac = SignalGenValue; //Note!!! Only for F446re, not aviable for MCU without DAC
+ led = SignalGenValue; //only for you to see directly from eyes
+
+ //start reading analog signal
+ SignalProbeValue = adc.read(); //acquire analog data
+
+ //print out data
+ pc.printf("%.2f\r", SignalProbeValue); //transfer data to PC
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Timebase funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
\ No newline at end of file
--- a/sample_timebase.cpp Thu Jan 19 07:42:30 2017 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,59 +0,0 @@
-#include "mbed.h"
-
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~GPIO registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-DigitalOut led = D13; //link leg
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of GPIO registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-
-
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~Varible registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-Ticker TT1; //call a timer
-Ticker TT2; //call a timer
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Varible registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-
-
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~Function registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-void init_IO(); //initialize IO state
-void init_TIMER(); //set TT_main{} rate
-void TT1_main(); //timebase function rated by TT1
-void TT2_main(); //timebase function rated by TT2
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Function registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-
-
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~main funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-int main()
-{
- init_IO(); //initialized value
- init_TIMER(); //initialized Timer Inturrupt rate
-
- while(1) { //main() loop
- }
-}
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of main funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-
-
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~init_IO funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-void init_IO(void) //initialize
-{
- led = 1;
-}
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of init_IO funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-
-
-
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~Timebase funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
-void init_TIMER() //set TTx_main{} rate
-{
- TT1.attach_us(&TT1_main, 1000);
- TT2.attach_us(&TT2_main, 1010);
-}
-
-void TT1_main() //interrupt function by TT1
-{
- led = !led;
-}
-
- void TT2_main() //interrupt function by TT2
-{
- led = !led;
-}
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Timebase funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
\ No newline at end of file